TU56/TC11 restoration - Power supply question

[Guy Sotomayor]

On Wed, 2005-03-16 at 14:34 -0500, dvcorbin at optonline.net wrote:
> > Is the H720 the correct power supply for the TC11/TU56
> > combo, as is indicated in some document I've looked at? 
> > I'm at work and don't have my notes.   Are there other
> > compatible DEC power supplies that will work with the 
> > TC11/TU56?
> > 
> 
> On a related note...any special concerns on an initial powerup of a
> TU-56 that has not been turned on for possibly 5+ years....??

Any solid DC supplies that match the requirements of the TC11/TU56
should be fine.  The TU56 on my 8-e has a non-DEC supply and it seems to
work fine.

Other than the usual caution about capacitors in power supplies, the
TU56 does suffer from deterioration of the motor run capacitors (these
are quite different than motor start caps).  The often need to be
replaced and are fairly expensive (I seem to recall that mine were
$25/ea and there are 4).  They are also a bit difficult to find.

If anyone has any other suggestions (or sources for motor run caps), I'd
be interested too.
-- 

TTFN - Guy